Medicine: X Rays to the Heart

For patients whose hearts have been damaged by a shutdown in a coronary artery, a Manhattan surgeon last week reported "encouraging progress" with a new and bloodless method of increasing the circulation. Dr. Ivan D. Baronofsky, chief surgeon at Mount Sinai Hospital, told the New York Heart Association that his technique involves use of X rays to provoke enlargement or multiplication of small, subsidiary arteries in the heart wall so that they will carry more blood.

Although about a million Americans annually have a first heart attack, which they survive with varying degrees of disability, doctors so far have been baffled in...

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